This is the 750th most frequent Serbian word.
средње
"Средње" means "medium" or "average" in English.
Here, 'средње' describes the position as being in the middle, functioning as an adjective modifying 'месту' (position).
Стојим на средње месту у реду.
I am standing in a middle position in the line.
Here, 'средње' is used as an adverb indicating a level of difficulty.
Ово питање је средње тешко.
This question is of medium difficulty.
In this sentence, 'средње' functions as an adjective describing the noun 'образовање' (education).